Cognomen Cowlin (Cowlin 
) , in the entire world, is a rare surname. The surname Cowlin is habitual in the United Kingdom, where it is a rare surname, New Zealand, and Canada, where it is a very rare surname. In absolute terms, it is commonest in the United Kingdom, the United States, and Canada.
| francis cowlin Cowlin, Sir Francis Nicholas (1868–1945), building contractor (b. 1868) |
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| dorothy cowlin British author, GB (b. 1911) |
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| chris cowlin British actor, GB (b. 1980) |
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| bert cowlin radio broadcaster |
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